diff --git a/hw/ide/cmd646.c b/hw/ide/cmd646.c
index 33be386..d6ef799 100644
--- a/hw/ide/cmd646.c
+++ b/hw/ide/cmd646.c
@@ -127,7 +127,7 @@ static uint64_t bmdma_read(void *opaque, hwaddr addr,
                            unsigned size)
 {
     BMDMAState *bm = opaque;
-    PCIIDEState *pci_dev = bm->pci_dev;
+    PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev);
     uint32_t val;
 
     if (size != 1) {
@@ -139,16 +139,16 @@ static uint64_t bmdma_read(void *opaque, hwaddr addr,
         val = bm->cmd;
         break;
     case 1:
-        val = pci_dev->dev.config[MRDMODE];
+        val = pci_dev->config[MRDMODE];
         break;
     case 2:
         val = bm->status;
         break;
     case 3:
-        if (bm == &pci_dev->bmdma[0]) {
-            val = pci_dev->dev.config[UDIDETCR0];
+        if (bm == &bm->pci_dev->bmdma[0]) {
+            val = pci_dev->config[UDIDETCR0];
         } else {
-            val = pci_dev->dev.config[UDIDETCR1];
+            val = pci_dev->config[UDIDETCR1];
         }
         break;
     default:
@@ -165,7 +165,7 @@ static void bmdma_write(void *opaque, hwaddr addr,
                         uint64_t val, unsigned size)
 {
     BMDMAState *bm = opaque;
-    PCIIDEState *pci_dev = bm->pci_dev;
+    PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev);
 
     if (size != 1) {
         return;
@@ -179,18 +179,19 @@ static void bmdma_write(void *opaque, hwaddr addr,
         bmdma_cmd_writeb(bm, val);
         break;
     case 1:
-        pci_dev->dev.config[MRDMODE] =
-            (pci_dev->dev.config[MRDMODE] & ~0x30) | (val & 0x30);
-        cmd646_update_irq(pci_dev);
+        pci_dev->config[MRDMODE] =
+            (pci_dev->config[MRDMODE] & ~0x30) | (val & 0x30);
+        cmd646_update_irq(bm->pci_dev);
         break;
     case 2:
         bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);
         break;
     case 3:
-        if (bm == &pci_dev->bmdma[0])
-            pci_dev->dev.config[UDIDETCR0] = val;
-        else
-            pci_dev->dev.config[UDIDETCR1] = val;
+        if (bm == &bm->pci_dev->bmdma[0]) {
+            pci_dev->config[UDIDETCR0] = val;
+        } else {
+            pci_dev->config[UDIDETCR1] = val;
+        }
         break;
     }
 }
@@ -222,25 +223,29 @@ static void bmdma_setup_bar(PCIIDEState *d)
    registers */
 static void cmd646_update_irq(PCIIDEState *d)
 {
+    PCIDevice *pd = PCI_DEVICE(d);
     int pci_level;
-    pci_level = ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH0) &&
-                 !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH0)) ||
-        ((d->dev.config[MRDMODE] & MRDMODE_INTR_CH1) &&
-         !(d->dev.config[MRDMODE] & MRDMODE_BLK_CH1));
-    qemu_set_irq(d->dev.irq[0], pci_level);
+
+    pci_level = ((pd->config[MRDMODE] & MRDMODE_INTR_CH0) &&
+                 !(pd->config[MRDMODE] & MRDMODE_BLK_CH0)) ||
+        ((pd->config[MRDMODE] & MRDMODE_INTR_CH1) &&
+         !(pd->config[MRDMODE] & MRDMODE_BLK_CH1));
+    qemu_set_irq(pd->irq[0], pci_level);
 }
 
 /* the PCI irq level is the logical OR of the two channels */
 static void cmd646_set_irq(void *opaque, int channel, int level)
 {
     PCIIDEState *d = opaque;
+    PCIDevice *pd = PCI_DEVICE(d);
     int irq_mask;
 
     irq_mask = MRDMODE_INTR_CH0 << channel;
-    if (level)
-        d->dev.config[MRDMODE] |= irq_mask;
-    else
-        d->dev.config[MRDMODE] &= ~irq_mask;
+    if (level) {
+        pd->config[MRDMODE] |= irq_mask;
+    } else {
+        pd->config[MRDMODE] &= ~irq_mask;
+    }
     cmd646_update_irq(d);
 }
 
@@ -257,8 +262,8 @@ static void cmd646_reset(void *opaque)
 /* CMD646 PCI IDE controller */
 static int pci_cmd646_ide_initfn(PCIDevice *dev)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
-    uint8_t *pci_conf = d->dev.config;
+    PCIIDEState *d = PCI_IDE(dev);
+    uint8_t *pci_conf = dev->config;
     qemu_irq *irq;
     int i;
 
@@ -284,7 +289,7 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
 
     irq = qemu_allocate_irqs(cmd646_set_irq, d, 2);
     for (i = 0; i < 2; i++) {
-        ide_bus_new(&d->bus[i], &d->dev.qdev, i, 2);
+        ide_bus_new(&d->bus[i], DEVICE(dev), i, 2);
         ide_init2(&d->bus[i], irq[i]);
 
         bmdma_init(&d->bus[i], &d->bmdma[i], d);
@@ -293,14 +298,14 @@ static int pci_cmd646_ide_initfn(PCIDevice *dev)
                                          &d->bmdma[i].dma);
     }
 
-    vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);
+    vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d);
     qemu_register_reset(cmd646_reset, d);
     return 0;
 }
 
 static void pci_cmd646_ide_exitfn(PCIDevice *dev)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
+    PCIIDEState *d = PCI_IDE(dev);
     unsigned i;
 
     for (i = 0; i < 2; ++i) {
@@ -347,8 +352,7 @@ static void cmd646_ide_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo cmd646_ide_info = {
     .name          = "cmd646-ide",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(PCIIDEState),
+    .parent        = TYPE_PCI_IDE,
     .class_init    = cmd646_ide_class_init,
 };
 
diff --git a/hw/ide/pci.c b/hw/ide/pci.c
index 635a364..91151fc 100644
--- a/hw/ide/pci.c
+++ b/hw/ide/pci.c
@@ -56,13 +56,14 @@ static int bmdma_prepare_buf(IDEDMA *dma, int is_write)
 {
     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);
     IDEState *s = bmdma_active_if(bm);
+    PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev);
     struct {
         uint32_t addr;
         uint32_t size;
     } prd;
     int l, len;
 
-    pci_dma_sglist_init(&s->sg, &bm->pci_dev->dev,
+    pci_dma_sglist_init(&s->sg, pci_dev,
                         s->nsector / (BMDMA_PAGE_SIZE / 512) + 1);
     s->io_buffer_size = 0;
     for(;;) {
@@ -71,7 +72,7 @@ static int bmdma_prepare_buf(IDEDMA *dma, int is_write)
             if (bm->cur_prd_last ||
                 (bm->cur_addr - bm->addr) >= BMDMA_PAGE_SIZE)
                 return s->io_buffer_size != 0;
-            pci_dma_read(&bm->pci_dev->dev, bm->cur_addr, &prd, 8);
+            pci_dma_read(pci_dev, bm->cur_addr, &prd, 8);
             bm->cur_addr += 8;
             prd.addr = le32_to_cpu(prd.addr);
             prd.size = le32_to_cpu(prd.size);
@@ -98,6 +99,7 @@ static int bmdma_rw_buf(IDEDMA *dma, int is_write)
 {
     BMDMAState *bm = DO_UPCAST(BMDMAState, dma, dma);
     IDEState *s = bmdma_active_if(bm);
+    PCIDevice *pci_dev = PCI_DEVICE(bm->pci_dev);
     struct {
         uint32_t addr;
         uint32_t size;
@@ -113,7 +115,7 @@ static int bmdma_rw_buf(IDEDMA *dma, int is_write)
             if (bm->cur_prd_last ||
                 (bm->cur_addr - bm->addr) >= BMDMA_PAGE_SIZE)
                 return 0;
-            pci_dma_read(&bm->pci_dev->dev, bm->cur_addr, &prd, 8);
+            pci_dma_read(pci_dev, bm->cur_addr, &prd, 8);
             bm->cur_addr += 8;
             prd.addr = le32_to_cpu(prd.addr);
             prd.size = le32_to_cpu(prd.size);
@@ -128,10 +130,10 @@ static int bmdma_rw_buf(IDEDMA *dma, int is_write)
             l = bm->cur_prd_len;
         if (l > 0) {
             if (is_write) {
-                pci_dma_write(&bm->pci_dev->dev, bm->cur_prd_addr,
+                pci_dma_write(pci_dev, bm->cur_prd_addr,
                               s->io_buffer + s->io_buffer_index, l);
             } else {
-                pci_dma_read(&bm->pci_dev->dev, bm->cur_prd_addr,
+                pci_dma_read(pci_dev, bm->cur_prd_addr,
                              s->io_buffer + s->io_buffer_index, l);
             }
             bm->cur_prd_addr += l;
@@ -480,7 +482,7 @@ const VMStateDescription vmstate_ide_pci = {
     .minimum_version_id_old = 0,
     .post_load = ide_pci_post_load,
     .fields      = (VMStateField []) {
-        VMSTATE_PCI_DEVICE(dev, PCIIDEState),
+        VMSTATE_PCI_DEVICE(parent_obj, PCIIDEState),
         VMSTATE_STRUCT_ARRAY(bmdma, PCIIDEState, 2, 0,
                              vmstate_bmdma, BMDMAState),
         VMSTATE_IDE_BUS_ARRAY(bus, PCIIDEState, 2),
@@ -492,7 +494,7 @@ const VMStateDescription vmstate_ide_pci = {
 
 void pci_ide_create_devs(PCIDevice *dev, DriveInfo **hd_table)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
+    PCIIDEState *d = PCI_IDE(dev);
     static const int bus[4]  = { 0, 0, 1, 1 };
     static const int unit[4] = { 0, 1, 0, 1 };
     int i;
@@ -531,3 +533,17 @@ void bmdma_init(IDEBus *bus, BMDMAState *bm, PCIIDEState *d)
     bus->irq = *irq;
     bm->pci_dev = d;
 }
+
+static const TypeInfo pci_ide_type_info = {
+    .name = TYPE_PCI_IDE,
+    .parent = TYPE_PCI_DEVICE,
+    .instance_size = sizeof(PCIIDEState),
+    .abstract = true,
+};
+
+static void pci_ide_register_types(void)
+{
+    type_register_static(&pci_ide_type_info);
+}
+
+type_init(pci_ide_register_types)
diff --git a/hw/ide/pci.h b/hw/ide/pci.h
index a694e54..2428275 100644
--- a/hw/ide/pci.h
+++ b/hw/ide/pci.h
@@ -37,8 +37,14 @@ typedef struct CMD646BAR {
     struct PCIIDEState *pci_dev;
 } CMD646BAR;
 
+#define TYPE_PCI_IDE "pci-ide"
+#define PCI_IDE(obj) OBJECT_CHECK(PCIIDEState, (obj), TYPE_PCI_IDE)
+
 typedef struct PCIIDEState {
-    PCIDevice dev;
+    /*< private >*/
+    PCIDevice parent_obj;
+    /*< public >*/
+
     IDEBus bus[2];
     BMDMAState bmdma[2];
     uint32_t secondary; /* used only for cmd646 */
diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index bd6f59a..1296826 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -106,7 +106,8 @@ static void bmdma_setup_bar(PCIIDEState *d)
 static void piix3_reset(void *opaque)
 {
     PCIIDEState *d = opaque;
-    uint8_t *pci_conf = d->dev.config;
+    PCIDevice *pd = PCI_DEVICE(d);
+    uint8_t *pci_conf = pd->config;
     int i;
 
     for (i = 0; i < 2; i++) {
@@ -149,15 +150,15 @@ static void pci_piix_init_ports(PCIIDEState *d) {
 
 static int pci_piix_ide_initfn(PCIDevice *dev)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
-    uint8_t *pci_conf = d->dev.config;
+    PCIIDEState *d = PCI_IDE(dev);
+    uint8_t *pci_conf = dev->config;
 
     pci_conf[PCI_CLASS_PROG] = 0x80; // legacy ATA mode
 
     qemu_register_reset(piix3_reset, d);
 
     bmdma_setup_bar(d);
-    pci_register_bar(&d->dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
+    pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 
     vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d);
 
@@ -168,13 +169,11 @@ static int pci_piix_ide_initfn(PCIDevice *dev)
 
 static int pci_piix3_xen_ide_unplug(DeviceState *dev)
 {
-    PCIDevice *pci_dev;
     PCIIDEState *pci_ide;
     DriveInfo *di;
     int i = 0;
 
-    pci_dev = PCI_DEVICE(dev);
-    pci_ide = DO_UPCAST(PCIIDEState, dev, pci_dev);
+    pci_ide = PCI_IDE(dev);
 
     for (; i < 3; i++) {
         di = drive_get_by_index(IF_IDE, i);
@@ -203,7 +202,7 @@ PCIDevice *pci_piix3_xen_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 
 static void pci_piix_ide_exitfn(PCIDevice *dev)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
+    PCIIDEState *d = PCI_IDE(dev);
     unsigned i;
 
     for (i = 0; i < 2; ++i) {
@@ -253,8 +252,7 @@ static void piix3_ide_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo piix3_ide_info = {
     .name          = "piix3-ide",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(PCIIDEState),
+    .parent        = TYPE_PCI_IDE,
     .class_init    = piix3_ide_class_init,
 };
 
@@ -273,8 +271,7 @@ static void piix3_ide_xen_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo piix3_ide_xen_info = {
     .name          = "piix3-ide-xen",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(PCIIDEState),
+    .parent        = TYPE_PCI_IDE,
     .class_init    = piix3_ide_xen_class_init,
 };
 
@@ -294,8 +291,7 @@ static void piix4_ide_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo piix4_ide_info = {
     .name          = "piix4-ide",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(PCIIDEState),
+    .parent        = TYPE_PCI_IDE,
     .class_init    = piix4_ide_class_init,
 };
 
diff --git a/hw/ide/via.c b/hw/ide/via.c
index 5a83191..80d7a13 100644
--- a/hw/ide/via.c
+++ b/hw/ide/via.c
@@ -108,7 +108,8 @@ static void bmdma_setup_bar(PCIIDEState *d)
 static void via_reset(void *opaque)
 {
     PCIIDEState *d = opaque;
-    uint8_t *pci_conf = d->dev.config;
+    PCIDevice *pd = PCI_DEVICE(d);
+    uint8_t *pci_conf = pd->config;
     int i;
 
     for (i = 0; i < 2; i++) {
@@ -158,7 +159,7 @@ static void vt82c686b_init_ports(PCIIDEState *d) {
     int i;
 
     for (i = 0; i < 2; i++) {
-        ide_bus_new(&d->bus[i], &d->dev.qdev, i, 2);
+        ide_bus_new(&d->bus[i], DEVICE(d), i, 2);
         ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,
                         port_info[i].iobase2);
         ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));
@@ -173,17 +174,17 @@ static void vt82c686b_init_ports(PCIIDEState *d) {
 /* via ide func */
 static int vt82c686b_ide_initfn(PCIDevice *dev)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
-    uint8_t *pci_conf = d->dev.config;
+    PCIIDEState *d = PCI_IDE(dev);
+    uint8_t *pci_conf = dev->config;
 
     pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy ATA mode */
     pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
 
     qemu_register_reset(via_reset, d);
     bmdma_setup_bar(d);
-    pci_register_bar(&d->dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
+    pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);
 
-    vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);
+    vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d);
 
     vt82c686b_init_ports(d);
 
@@ -192,7 +193,7 @@ static int vt82c686b_ide_initfn(PCIDevice *dev)
 
 static void vt82c686b_ide_exitfn(PCIDevice *dev)
 {
-    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, dev);
+    PCIIDEState *d = PCI_IDE(dev);
     unsigned i;
 
     for (i = 0; i < 2; ++i) {
@@ -228,8 +229,7 @@ static void via_ide_class_init(ObjectClass *klass, void *data)
 
 static const TypeInfo via_ide_info = {
     .name          = "via-ide",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(PCIIDEState),
+    .parent        = TYPE_PCI_IDE,
     .class_init    = via_ide_class_init,
 };
 
